Callweaver

Callweaver is a community driven software PBX
project. The most important differences between
Callweaver and Asterisk are built-in STUN support,
the use of SpanDSP for better codecs and full T.38
fax over IP support, Sqlite instead of Berkeley
DB, universal jitterbuffer, POSIX timers to avoid
Zaptel timing dependencies, greater speed, more
efficient dialplan execution, and greater
stability.

Recent releases

Release Notes: Some known bugs still exist, but the new code now allows for all
three modes of T.38 (Gateway, Endpoint, and Passthrough) quite
stably with most hardware. The latest spandsp library is required,
currently version 0.0.4pre15.

Release Notes: This release drops Editline support and introduces GNU Readline as a replacement. app_conference was removed and NConference, a new feature-rich application, replaces it. A new version of generic timers providing better performance is now in the core to support FreeBSD 6.2, NetBSD, OS X, and other operating systems. CLI issues on OS X are hopefully fixed now. This release adds initial support for ucLinux. Many small bugfixes were made.